Pulley mechanism and drifting door and window system comprising same

Abstract

The utility model discloses a pulley mechanism and a drifting door and window system comprising the same. The pulley mechanism comprises a pulley seat; the swing arm is hinged to the pulley seat, and the swing arm can rotate between a storage position and an unfolding position relative to the pulley seat; the sliding part is slidably arranged on the pulley seat along the sliding direction of the pulley seat; when the sliding piece is not pressed and is located at the locking position, the sliding piece limits rotation of the swing arm so that the swing arm can be kept at the unfolding position. When the sliding part is pressed to slide to the unlocking position, the sliding part relieves rotation limitation on the swing arm so as to allow the swing arm to rotate between the storage position and the unfolding position. Thus, the sliding piece which is not pressed can limit rotation of the swing arm relative to the pulley base, the door and window sash connected with the swing arm cannot shake outside the door and window frame, the sliding piece and the pulley base slide relatively in the same direction, and when the sliding piece and the pulley base slide relatively, the stress direction and the sliding direction of the sliding piece are basically the same. And the driving of the sliding piece is relatively simple and stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to door and window hardware fitting technical field especially sliding door and window system including its of sliding pulley mechanism. BACKGROUND

[0002] Side moving door and window, called as sliding door and window in market, has the attribute that can move door and window sash out of window frame and make door and window sash linearly slide outside door and window frame, so that it does not occupy too much extra space and has large opening area.

[0003] Chinese patent (CN210858435U) discloses a side moving inwardly tilting window, referring to its figure 11, its moving mechanism includes sliding seat 53, connecting rod 51, first lock hook 93 and second lock hook 95, two ends of connecting rod 51 are respectively hinged to window sash and sliding seat 53, sliding seat 53 is installed on slide rail installed on window frame, when working, inwardly pull window sash, drive connecting rod 51 to rotate, make lower part of window sash translate out of frame, after translation, apply external force to side edge, through the cooperation of slide rail and sliding seat 53, realize the sliding of window sash along frame.

[0004] The current market drift window is basically designed based on the above structure, but basically all have a obvious shortcoming, after the first hook 93 and the second hook 95 unhook, the connecting rod 51 can still rotate left and right, that is, after the moving mechanism moves the window out of the window frame, the window still moves forward and backward during the left and right translation, which will make the window structure unstable and easy to shake. In order to solve this problem, Chinese patent (CN217950089U) discloses a drift window moving mechanism, which includes a limiting assembly, a sliding seat 1 and a connecting rod 2, the connecting rod 2 is rotatably connected to the sliding seat 1, the connecting rod 2 is used for connecting the window, the window can be moved forward and backward through the action of the connecting rod 2, so that the window can be moved out of the window frame, the window can be moved left and right through the action of the sliding seat 1, the limiting assembly can limit the action of the connecting rod 2 after the sliding seat 1 moves out of the initial position. Specifically, the limiting assembly includes a first lock block 3 and a second lock block 4, the first lock block 3 is arranged on the sliding seat 1, the first lock block 3 is used for limiting the action of the connecting rod 2, and the second lock block 4 is used for triggering the first lock block 3; wherein, when the sliding seat 1 is located at the initial position, the first lock block 3 and the second lock block 4 are in contact, and the first lock block 3 does not limit the action of the connecting rod 2; when the sliding seat 1 moves out of the initial position, the first lock block 3 and the second lock block 4 are not in contact, and the first lock block 3 limits the action of the connecting rod 2. The limiting assembly further includes a sliding plate 5, the sliding plate 5 is slidably connected to the sliding seat 1, the sliding plate 5 is provided with a pulling block 501, the connecting rod 2 is provided with a pulling part 201, the pulling part 201 is located outside the pulling block 501, so that when the connecting rod 2 is rotated, the sliding plate 5 is driven to move; the first lock block 3 can enter and exit the movement path of the sliding plate 5; wherein, when the first lock block 3 and the second lock block 4 are in contact, the first lock block 3 is guided out of the movement path of the sliding plate 5; when the first lock block 3 and the second lock block 4 are not in contact, the first lock block 3 is guided into the movement path of the sliding plate 5. Specifically, the sliding seat 1 is provided with a first placing groove 101, the first placing groove 101 is provided with a first spring 301, the first spring 301 is vertically placed, the first lock block 3 is placed in the first placing groove 101 and supported by the upper end of the first spring 301; the first lock block 3 is provided with a first guide inclined surface 302; wherein, when the first lock block 3 and the second lock block 4 are in contact, the second lock block 4 abuts on the first guide inclined surface 302, and the first lock block 3 is pulled down through the guiding action of the first guide inclined surface 302; when the first lock block 3 and the second lock block 4 are not in contact, the first spring 301 lifts the first lock block 3 upward. It can be understood that in the drift window moving mechanism, the first lock block 3 needs to be subjected to a horizontal force to move up and down, the stress direction and the movement direction of the first sliding block are basically perpendicular, and the driving of the first lock block 3 has the problems of complexity and instability. Practical new type content

[0005] In order to overcome at least one of the above-mentioned defects of the prior art, the utility model provides a pulley mechanism and including its drift door and window system, it includes for limiting swing arm rotation sliding piece, the stress direction and the sliding direction of sliding piece are basically same, the drive of sliding piece is simple and stable, the whole pulley mechanism is simple in structure, function realization is easy, and production cost is lower.

[0006] The utility model discloses a pulley mechanism and including its drift door and window system, it includes for limiting swing arm rotation sliding piece, the stress direction and the sliding direction of sliding piece are basically same, the drive of sliding piece is simple and stable, the whole pulley mechanism is simple in structure, function realization is easy, and production cost is lower.

[0007] A pulley mechanism, comprising: a pulley seat; a swing arm hinged to the pulley seat, the swing arm being rotatable relative to the pulley seat between a stowed position and a deployed position; and a sliding piece slidingly arranged on the pulley seat along a sliding direction of the pulley seat; when the sliding piece is not pressed and is in a locked position, the sliding piece restricts rotation of the swing arm to keep the swing arm in the deployed position; when the sliding piece is pressed and slides to an unlocked position, the sliding piece releases the rotation restriction on the swing arm to allow the swing arm to rotate between the stowed position and the deployed position.

[0008] According to some embodiments of the utility model, the sliding piece is provided with a limiting column, one side of the swing arm is provided with a limiting hole; when the sliding piece is in the locked position, the limiting column is clamped in the limiting hole to restrict the rotation of the swing arm; when the sliding piece is in the unlocked position, the limiting column is separated from the limiting hole to release the rotation restriction on the swing arm.

[0009] According to some embodiments of the utility model, the pulley mechanism further comprises an elastic piece, the elastic piece is configured to reset the sliding piece from the unlocked position to the locked position when the sliding piece is separated from the pressing.

[0010] According to some embodiments of the utility model, the pulley mechanism further comprises a rotating piece, the rotating piece is rotatably arranged on the pulley seat, and the elastic piece is arranged between the pulley seat and the rotating piece; the sliding piece and the rotating piece are in transmission connection, when the sliding piece is pressed and slides to the unlocked position, the sliding piece drives the rotating piece to rotate, and under the action of the rotating piece, the elastic piece deforms; when the sliding piece is separated from the pressing, the elastic piece restores the deformation and drives the rotating piece to rotate, and under the action of the rotating piece, the sliding piece is reset from the unlocked position to the locked position.

[0011] According to some embodiments of the utility model, the sliding piece is provided with a transmission column, the rotating piece is provided with a transmission groove, the transmission column is connected in the transmission groove, and the sliding piece and the rotating piece realize transmission connection through the cooperation of the transmission column and the transmission groove.

[0012] According to some embodiments of the present utility model, the elastic piece is a torsion spring.

[0013] According to some embodiments of the present utility model, the rotating piece is further provided with a stress slot, and the torsion spring is provided with a first elastic arm, and the first elastic arm is arranged in the stress slot.

[0014] According to some embodiments of the present utility model, the pulley mechanism further comprises a pressing base, the pressing base is used for being fixed on the door and window track, when the pulley base slides towards the pressing base, one end of the sliding piece is pressed by the pressing base and slides to the unlocking position.

[0015] According to some embodiments of the present utility model, the pressing base is provided with an abutting slot, and the rotating piece is provided with an abutting block; when the sliding piece is pressed by the pressing base and slides to the unlocking position, the sliding piece drives the rotating piece to rotate until the abutting block abuts in the abutting slot.

[0016] In addition, the present utility model further provides a drift door and window system, which comprises the pulley mechanism as described above.

[0017] In summary, the pulley mechanism and the drift door and window system comprising the same provided by the present utility model have at least the following technical effects:

[0018] On the one hand, when the swing arm rotates to the unfolded position to allow the door and window leaf to move outside the door and window frame, the sliding piece not pressed by the pressing base can limit the rotation of the swing arm relative to the pulley base, so that the swing arm cannot rotate, and the door and window leaf connected with the swing arm cannot also shake outside the door and window frame, thereby the stability of the door and window leaf moving outside the door and window frame can be improved; on the other hand, the sliding piece and the pulley base relatively slide in the same direction, when the sliding piece and the pulley base relatively slide, the stress direction of the sliding piece is basically the same as the sliding direction, the driving of the sliding piece is relatively simple and stable, the pulley mechanism is simple in structure as a whole, easy to realize the function, and low in production cost. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a front view structural schematic diagram of the sliding mechanism (when the swing arm is in the unfolded position and the sliding piece is in the locking position) of the present utility model embodiment;

[0020] Figure 2 It is a top view structural schematic diagram of the sliding mechanism (when the swing arm is in the unfolded position and the sliding piece is in the locking position) of the present utility model embodiment;

[0021] Figure 3 It is an explosion structural schematic diagram of the sliding mechanism (when the swing arm is in the unfolded position and the sliding piece is in the locking position) of the present utility model embodiment;

[0022] Figure 4The front view structural schematic diagram of the sliding mechanism (when the swing arm is in the storage position and the sliding part is in the unlocking position) of the embodiment of the utility model;

[0023] Figure 5 The top view structural schematic diagram of the sliding mechanism (when the swing arm is in the storage position and the sliding part is in the unlocking position) of the embodiment of the utility model;

[0024] Figure 6 The explosion structural schematic diagram of the sliding mechanism (when the swing arm is in the storage position and the sliding part is in the unlocking position) of the embodiment of the utility model;

[0025] Figure 7 The structural schematic diagram of the abutting seat of the embodiment of the utility model;

[0026] Figure 8 The structural schematic diagram of the drift door and window system (when the door and window leaf moves into the door and window frame) of the embodiment of the utility model;

[0027] Figure 9 The structural schematic diagram of the drift door and window system (when the door and window leaf moves out of the door and window frame) of the embodiment of the utility model.

[0028] Wherein, the meaning of the reference signs is as follows:

[0029] 1, pulley seat; 11, shaft hole; 12, supporting plate; 2, swing arm; 21, limiting hole; 22, connecting seat; 3, sliding part; 31, limiting column; 32, transmission column; 4, elastic part; 41, main body; 42, first elastic arm; 43, second elastic arm; 5, rotating part; 51, transmission groove; 52, stress groove; 53, abutting block; 54, rotating shaft; 6, abutting seat; 61, abutting groove; 62, abutting side wall; 7, connecting shaft; 8, door and window track; 9, door and window leaf; 10, door and window frame. DETAILED DESCRIPTION

[0030] In order to better understand and implement, the technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model.

[0031] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application.

[0033] The utility model will be explained further in detail below in combination with the drawings.

[0034] Please refer to Figures 1 to 6 , the embodiment discloses a pulley mechanism for a drift door and window system, the pulley mechanism comprises a pulley seat 1, a swing arm 2 and a sliding piece 3;The pulley seat 1 is used to slide the door and window track 8, the pulley seat 1 can slide along the extension direction of the door and window track 8, the swing arm 2 is hinged to the pulley seat 1, and the swing arm 2 can be rotated relative to the pulley seat 1 between the storage position and the unfolded position;The sliding piece 3 is slidably arranged on the pulley seat 1 along the sliding direction of the pulley seat 1, specifically, when the pulley seat 1 slides to the position where the drift door and window system approaches the closed state, the sliding piece 3 will be pressed against the other components arranged on the door and window track 8 and slide relative to the pulley seat 1;The sliding piece 3 can slide relative to the pulley seat 1 between the locked position and the unlocked position, when the sliding piece 3 is not pressed and is in the locked position, the sliding piece 3 limits the rotation of the swing arm 2 to keep the swing arm 2 in the unfolded position;When the sliding piece 3 is pressed and slides to the unlocked position, the sliding piece 3 releases the rotation restriction of the swing arm 2 to allow the swing arm 2 to rotate between the storage position and the unfolded position.

[0035] Specifically, the door and window frame 10 comprises a door and window track 8, as shown in Figure 4 、 Figure 5 and Figure 8 , when the swing arm 2 rotates to the storage position, the door and window sash 9 moves into the door and window frame 10;As shown in Figure 1 、 Figure 2 and Figure 9 , when the swing arm 2 rotates to the unfolded position, the door and window sash 9 moves out of the door and window frame 10, and the door and window sash 9 can translate along the door and window track 8 outside the door and window frame 10.

[0036] The pulley mechanism provided by the embodiment has the following advantages: on the one hand, when the swing arm 2 rotates to the unfolded position to allow the door and window sash 9 to move outside the door and window frame 10, the sliding piece 3 that is not pressed can limit the rotation of the swing arm 2 relative to the pulley seat 1, so that the swing arm 2 cannot rotate, and the door and window sash 9 connected with the swing arm 2 cannot also shake outside the door and window frame 10, thereby improving the stability of the door and window sash 9 moving outside the door and window frame 10;On the other hand, the sliding piece 3 and the pulley seat 1 slide relative to each other in the same direction, when the sliding piece 3 and the pulley seat 1 slide relative to each other, the force direction of the sliding piece 3 is basically the same as the sliding direction, the driving of the sliding piece 3 is relatively simple and stable, the overall structure of the pulley mechanism is simple, the function is easy to realize, and the production cost is relatively low.

[0037] Specifically, in the present embodiment, the sliding direction of the pulley seat 1 and the sliding member 3 can refer to the e1 direction in the figure. Figure 1

[0038] As shown in Figure 3 and Figure 6 , specifically, in the present embodiment, the pulley seat 1 is provided with a supporting plate 12, and the sliding member 3 is slidingly connected to the supporting plate 12.

[0039] As shown in Figure 3 , Figure 5 and Figure 6 , preferably, in the present embodiment, in order to realize the rotation restriction of the swing arm 2, the sliding member 3 is provided with a limiting post 31, the limiting post 31 moves synchronously with the sliding member 3, one side of the swing arm 2 is provided with a limiting hole 21, the limiting hole 21 moves synchronously with the swing arm 2; as shown in Figure 2 and Figure 3 , when the sliding member 3 is in the locked position and the swing arm 2 is in the unfolded position, the limiting post 31 is clamped in the limiting hole 21 to restrict the rotation of the swing arm 2; as shown in Figure 5 and Figure 6 , when the sliding member 3 is in the unlocked position, the limiting post 31 is separated from the limiting hole 21 to release the rotation restriction of the swing arm 2, at this time, the swing arm 2 can move between the stowed position and the unfolded position. Specifically, in the present embodiment, the limiting hole 21 is a semicircular hole.

[0040] As shown in Figure 3 and Figure 6 , preferably, in the present embodiment, the pulley mechanism further comprises a resilient member 4, the resilient member 4 is configured to reset the sliding member 3 from the unlocked position to the locked position when the sliding member 3 is separated from the pressing, in this way, the resetting of the sliding member 3 is realized by setting the resilient member 4, the structure is relatively simple, the production cost is relatively low, and the elastic force of the resilient member 4 can also relatively stably keep the sliding member 3 in the locked position, so as to avoid the shaking of the sliding member 3 in the locked position to affect the rotation restriction of the swing arm 2.

[0041] As shown in Figure 1 , Figure 3 , Figure 4 and Figure 6 ​As shown, preferably, in the present embodiment, the pulley mechanism further comprises a rotating member 5, the rotating member 5 is rotatably arranged on the pulley base 1, and the elastic member 4 is arranged between the pulley base 1 and the rotating member 5; the sliding member 3 and the rotating member 5 are in transmission connection, when the sliding member 3 is pressed to slide to the unlocking position, the sliding member 3 drives the rotating member 5 to rotate, and under the action of the rotating member 5, the elastic member 4 deforms; when the sliding member 3 is separated from the pressing, the elastic member 4 restores the deformation and drives the rotating member 5 to rotate, and under the driving of the rotating member 5, the sliding member 3 resets from the unlocking position to the locking position; in this way, when the sliding member 3 is pressed to slide to the unlocking position, the sliding of the sliding member 3 is converted into the rotation of the rotating member 5, and the elastic member 4 deforms under the action of the rotating member 5; when the sliding member 3 resets to the locking position after being separated from the pressing, the elastic member 4 restores the deformation and drives the rotating member 5 to rotate, and then the rotation of the rotating member 5 is converted into the sliding of the sliding member 3; in this way, the deformation and deformation recovery of the elastic member 4 are relatively easy, and the position switching of the sliding member 3 is relatively smooth and smooth.

[0042] Specifically, in the present embodiment, the pulley base 1 is provided with an axle hole 11, the rotating member 5 is provided with a rotating shaft 54, the rotating shaft 54 is connected to the axle hole 11, and the rotating member 5 is rotatably connected to the sliding base 1 through the rotating shaft 54 and the axle hole 11.

[0043] As shown in Figure 3 and Figure 6 Preferably, in the present embodiment, the sliding member 3 is provided with a transmission column 32, the rotating member 5 is provided with a transmission groove 51, the transmission column 32 is connected in the transmission groove 51, and the sliding member 3 and the rotating member 5 are in transmission connection through the cooperation of the transmission column 32 and the transmission groove 51; specifically, when the sliding member 3 is pressed to slide to the unlocking position, the transmission column 32 and the sliding member 3 slide synchronously, and the transmission column 32 abuts against the transmission groove 51 to drive the rotating member 5 to rotate; when the sliding member 3 resets to the locking position after being separated from the pressing, the elastic member 4 drives the rotating member 5 to rotate, the rotating member 5 and the transmission groove 51 rotate synchronously, and the side wall of the transmission groove 51 abuts against the transmission column 32 to drive the sliding member 3 to slide.

[0044] Preferably, in the present embodiment, the elastic member 4 is a torsion spring. It should be noted that in some other embodiments, the elastic member 4 can also be but is not limited to a compression spring or a gas spring, and the selection can be made according to actual needs, which is not limited herein.

[0045] As shown in Figure 3 and Figure 6As shown, preferably, in the embodiment, the rotating member 5 is further provided with a force receiving groove 52, and the torsion spring is provided with a first elastic arm 42, which is arranged in the force receiving groove 52 so as to drive the rotating member 5 to rotate when the deformation is recovered. Specifically, in the embodiment, the pulley mechanism further comprises a connecting shaft 7 arranged in the pulley seat 1, and the torsion spring further comprises a main body 41 and a second elastic arm 43, the main body 41 is sleeved on the connecting shaft 7, the first elastic arm 42 and the second elastic arm 43 are both connected to the main body 41, and the second elastic arm 43 abuts against the pulley seat 1.

[0046] As shown in Figure 1 , Figure 3 , Figure 4 , Figure 6 and Figure 7 Specifically, in the embodiment, the pulley mechanism further comprises an abutting seat 6, which is used for being fixed to the door and window track 8, and when the pulley seat 1 slides towards the abutting seat 6, one end of the sliding member 3 is abutted and slid to the unlocking position by the abutting seat 6.

[0047] Specifically, in the embodiment, the abutting seat 6 is provided with an abutting side wall 62 for abutting the sliding member 3, and preferably, when the sliding member 3 is in the initial position, one end of the sliding member 3 is exposed to the pulley seat 1 in the sliding direction of the pulley seat 1, so that when the pulley seat 1 slides towards the abutting seat 6, one end of the sliding member 3 is abutted by the abutting side wall 62, thereby enabling the sliding member 3 to respond more quickly.

[0048] As shown in Figure 1 , Figure 4 , Figure 6 and Figure 7 Preferably, in the embodiment, the abutting seat 6 is provided with an abutting groove 61, and the rotating member 5 protrudes with an abutting block 53; when the sliding member 3 is abutted and slid to the unlocking position by the abutting seat 6, the sliding member 3 drives the rotating member 5 to rotate, the rotating member 5 drives the abutting block 53 to rotate upwards until the abutting block 53 abuts in the abutting groove 61, thereby avoiding the sliding member 3 from excessively sliding and colliding with other components of the pulley mechanism. Specifically, in the embodiment, when one side of the pulley seat 1 abuts against the abutting side wall 62, the abutting block 53 also abuts in the abutting groove 61.

[0049] As shown in Figure 3 and Figure 6 Specifically, in the embodiment, one end of the swing arm 2 is hinged with a connecting seat 22, which is used for being fixedly connected with the door and window leaf 9, thereby improving the connection stability between the swing arm 2 and the door and window leaf 9.

[0050] In addition, the embodiment further provides a drift door and window system, which comprises the pulley mechanism as described above, further comprises a door and window track 8 and a door and window leaf 9, the pulley seat 1 is slidingly arranged on the door and window track 8, and one end of the swing arm 2 is hinged to the door and window leaf 9, and the drift door and window system has all the advantages of the pulley mechanism, and details are not repeated here.

[0051] In summary, the pulley mechanism and the drift door and window system comprising the same disclosed by the utility model can bring at least the following beneficial technical effects:

[0052] 1) The sliding part 3 not subjected to pressing can limit the rotation of the swing arm 2 relative to the pulley seat 1, the door and window leaf 9 connected with the swing arm 2 cannot sway outside the door and window frame 10, so that the stability of the door and window leaf 9 moving outside the door and window frame 10 can be improved;

[0053] 2) The sliding part 3 and the pulley seat 1 slide in the same direction, when the sliding part 3 and the pulley seat 1 slide relative to each other, the force direction and the sliding direction of the sliding part 3 are basically the same, the driving of the sliding part 3 is relatively simple and stable, the overall structure of the pulley mechanism is relatively simple, the function is easy to realize, and the production cost is relatively low;

[0054] 3) The reset of the sliding part 3 is realized by arranging the elastic element 4, the structure is relatively simple, the elastic force of the elastic element 4 can also relatively stably keep the sliding part 3 in the locked position, so that the swing arm 2 is prevented from being affected by the sway of the sliding part 3 in the locked position and the rotation limitation;

[0055] 4) When the sliding part 3 is subjected to pressing and slides to the unlocked position, the sliding of the sliding part 3 is converted into the rotation of the rotating part 5, the elastic element 4 is deformed under the action of the rotating part 5, when the sliding part 3 is reset to the locked position after being separated from the pressing, the elastic element 4 is deformed and restored and drives the rotating part 5 to rotate, and then the rotation of the rotating part 5 is converted into the sliding of the sliding part 3, so that the deformation and deformation recovery of the elastic element 4 are relatively easy, and the position switching of the sliding part 3 is relatively smooth.

[0056] The technical means disclosed by the utility model scheme is not limited to the technical means disclosed by the above-mentioned embodiments, and further comprises a technical scheme composed of any combination of the above technical features. It should be noted that, for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principles of the utility model, and these improvements and refinements are also considered to be within the protection scope of the utility model.

Claims

1. A pulley mechanism, characterized by The pulley mechanism comprises: a pulley base (1); a swing arm (2) hinged to the pulley base (1), the swing arm (2) being rotatable relative to the pulley base (1) between a storage position and a deployment position; a sliding piece (3) slidingly arranged on the pulley base (1) along a sliding direction of the pulley base (1); when the sliding piece (3) is not pressed and is in a locked position, the sliding piece (3) limits the rotation of the swing arm (2) to keep the swing arm (2) in the deployment position; when the sliding piece (3) is pressed and slides to an unlocked position, the sliding piece (3) releases the rotation limitation of the swing arm (2) to allow the swing arm (2) to rotate between the storage position and the deployment position.

2. The pulley mechanism of claim 1, wherein The sliding piece (3) is provided with a limiting column (31), and one side of the swing arm (2) is provided with a limiting hole (21); when the sliding piece (3) is in the locked position, the limiting column (31) is clamped in the limiting hole (21) to limit the rotation of the swing arm (2); when the sliding piece (3) is in the unlocked position, the limiting column (31) is separated from the limiting hole (21) to release the rotation limitation of the swing arm (2).

3. The pulley mechanism of claim 1, wherein The pulley mechanism further comprises a resilient piece (4) configured to reset the sliding piece (3) from the unlocked position to the locked position when the sliding piece (3) is separated from the pressing.

4. The pulley mechanism of claim 3, wherein The pulley mechanism further comprises a rotating piece (5) rotatably arranged on the pulley base (1), and the resilient piece (4) is arranged between the pulley base (1) and the rotating piece (5); the sliding piece (3) and the rotating piece (5) are in transmission connection; when the sliding piece (3) is pressed and slides to the unlocked position, the sliding piece (3) drives the rotating piece (5) to rotate, and under the action of the rotating piece (5), the resilient piece (4) is deformed; when the sliding piece (3) is separated from the pressing, the resilient piece (4) restores the deformation and drives the rotating piece (5) to rotate, and under the action of the rotating piece (5), the sliding piece (3) is reset from the unlocked position to the locked position.

5. The pulley mechanism of claim 4, wherein, The sliding piece (3) is provided with a transmission column (32), the rotating piece (5) is provided with a transmission groove (51), the transmission column (32) is connected in the transmission groove (51), and the sliding piece (3) and the rotating piece (5) are in transmission connection through cooperation of the transmission column (32) and the transmission groove (51).

6. The pulley mechanism of claim 4, wherein The resilient piece (4) is a torsion spring.

7. The pulley mechanism of claim 6, wherein The rotating piece (5) is further provided with a stress groove (52), and the torsion spring has a first elastic arm (42) arranged in the stress groove (52).

8. The pulley mechanism of claim 4, wherein, The pulley mechanism further comprises a pressing base (6) for being fixed on a door and window track (8), and one end of the sliding piece (3) is pressed by the pressing base (6) to slide to the unlocked position when the pulley base (1) slides towards the pressing base (6).

9. The pulley mechanism of claim 8, wherein, The abutting seat (6) is provided with an abutting groove (61), and the rotating member (5) is provided with an abutting block (53); when the sliding member (3) is abutted and pressed by the abutting seat (6) to slide to the unlocking position, the sliding member (3) drives the rotating member (5) to rotate until the abutting block (53) abuts in the abutting groove (61).

10. A sliding door and window system characterized by, The pulley mechanism comprises the sliding member according to any one of claims 1-9.

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